TOC and TOX as indicator parameters for organic contaminants in landfill leachate |
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| Institution: | 1. Nanoenvirology Research Group, Civil and Environmental Engineering, North Dakota State University, United States of America;2. Grazinglands Research Laboratory, USDA-ARS, El Reno, OK, United States of America;3. Department of Soil Science, North Dakota State University, United States of America;1. Ocean college, Zhejiang University, Zhoushan 316021, China;2. College of civil engineering and architecture, Zhejiang University, Hangzhou 310085, China |
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| Abstract: | The validity of total organic carbon (TOC) or total organic halide (TOX) measurements as surrogate analyses to detect harmful emissions of leachate from landfills is examined. Correlations of analyses from over 1400 random samples obtained between 1984 and 1987 were interpreted. TOC frequently includes high background levels of natural organic materials in the soil and should only be used when reliable measurements of this background exist. TOX provides a qualitative indication of the presence of halogenated pollutants, but is unreliable as a quantitative indicator due to the complexity of leachate chemistry. Neither indicator is capable of detecting small quantities of highly toxic substances. |
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